/Engine/Source/Runtime/AnimGraphRuntime/Public/KismetAnimationLibrary.h
Computes the transform for two bones using inverse kinematics.
static void K2_TwoBoneIK ( const FVector & RootPos, const FVector & JointPos, const FVector & EndPos, const FVector & JointTarget, const FVector & Effector, FVector & OutJointPos, FVector & OutEndPos, bool bAllowStretching, float StartStretchRatio, float MaxStretchScale )